making cuts on a rolled sheet metal 2

[randolf19]

I'm using Solidwork's sheet metal module to roll a hollow cylinder on which i'd like to make an extruded circle cut perpendicular to the axis of the cylinder; basically using a circle cut to chop off half of the cylinder, leaving a bevelled edge that can be mated to the side of another cylinder. When I try to sketch a cut, however, Solidworks keeps giving me a "Failure due to a geometric condition." error which is really ambiguous. Anybody got any ideas of how i could better do this or solve the error? The key here is that I want to be able to unroll the cylinder to examine the bevelled edge as a flat sheet (using the "flatten" sheet metal button).

 

[Theophilus]

When you flatten your sheetmetal, it won't keep your edges of the metal beveled anyway--it treats the forming as a straight punching operation.

Now as to why you're getting an error, it could be because the circle you're using to make the cut is tangent to the surface of your rolled sheet metal. Try increasing the diameter a bit and see what happens.



Jeff Mowry

http://www.industrialdesignhaus.com

Reason trumps all. And awe transcends reason.

 

[randolf19]

theophilus,

Yeah, my design is that the circle is bigger than the diameter of the roll. Still getting the error, though!

 

[MikeHalloran]

If I'm reading you correctly, if your cut succeeded, you would end up with two cylinders having scalloped ends that are physically disconnected but logically still joined.

Other, older, tools will do that.

Solidworks perhaps thinks it's illogical and therefore refuses to do it.

Try shortening the cylinder so the cut only passes through it once. That would be logical.





Mike Halloran
Pembroke Pines, FL, USA

 

[AnnaWood]

randolf19,

Go see my reply to you in the SolidWorks forum.

For the rest of the crew, randolf19 is using the hem flange feature to create his tube. Not a typical way to go about making the tube with sheet metal features. His error is a result of Normal Cut toggle being on. Toggle that off and the extrude works.

I modeled the tube in the more traditional way and it works well with Normal Cut toggle on or off.

http://forum.solidworks.com/forum/messageview.cfm?catid=4&threadid=6680

Cheers,

Anna Wood
SW 2007 SP4.0, WinXP
Dell Precision 380, Pentium D940, 4 Gigs RAM, FX3450

http://designsmarter.typepad.com/solidmuse

http://www.phxswug.com

 

[randolf19]

Thanks anna! Your suggestion worked perfect.

 

[JMirisola]

A star for you, Anna. We've missed you around here.

Jeff Mirisola, CSWP

http://designsmarter.typepad.com/jeffs_blog

Dell M90, Core2 Duo
4GB RAM
Nvidia 3500M

 

[AnnaWood]

Jeff,

I have been lurking, just have been really busy. The workload is returning to a more normal pace and I have more time to spend contributing.

Thanks for the star,



Anna Wood
SW 2007 SP4.0, WinXP
Dell Precision 380, Pentium D940, 4 Gigs RAM, FX3450

http://designsmarter.typepad.com/solidmuse

http://www.phxswug.com

 

[JMirisola]

Careful, Anna. Lurking is a misdemeanor in some states...

Jeff Mirisola, CSWP

http://designsmarter.typepad.com/jeffs_blog

Dell M90, Core2 Duo
4GB RAM
Nvidia 3500M

 

[CorBlimeyLimey]

... especially if one of those states was induced by non-medicinal substances.